As part of our inquiry into
simple machines Room 11 looked at levers.
A lever is a rigid bar or piece
of wood used to exert a pressure by pivoting on its fulcrum. There are 3 types
of lever depending on where the fulcrum is placed.
We investigated one of the 3
types of lever by making a marshmallow catapult. Unlike a see-saw this type of
lever has its fulcrum at the base of the catapult. The process is outlined in
the video displayed.
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